It was pretty neat watching your tags go up with mine. I kept refreshing the page to see what you did. I did visit a couple of your bookmarks just to see what they were about. I have used the filamentality website before. There are one or two of my webquests in that database somewhere.

There was an issue with me using a lower case 'W" for written/instructional while Carolyn used an upper case. I thought when I looked that Diigo recognized them as the same. I clicked on my tag and got all of Carolyn's too. I just checked again and got the same results, so I don't think the capital letter matters. I do notice that there is a web2.0 and a web 2.0. The extra space means that they are different tags. and show up separately.

A series of lecture videos and demonstrations from MIT. These can help to give students another point of view of a topic as well as showing demonstrations that we may not be able to produce in our classroom.

I could have used this video at the end of this last school year to help explain the Doppler Effect. If only I had the time to look for it back then.

Cut and paste of these images to create a homework worksheet for students to practice drawing ray diagrams. Or use the quiz as an assessment tool.

site element...This collection of online unit converters can be helpful for students to use to check their work (homework, labs, etc.). The ones most useful would be the mass & force converter and length/distance converter.

organized site...provides tutorials for various topics in physics...I would use many of these topics

Used as a introductory lesson to simple machines. Students will learn of the six different types of simple machines, giving examples of each, and describing how they work.

site element...video of rotating bucket of water, good for circular motion and/or inertia

organized site...various links to constant values used in physics. I would use the Fundamental Physical Constants and the Decimal Multiples & Prefixes pages

organized site...I would use the mechanics section, and later on, parts of the electricity and magnetism sections.

site element...This is a video of the classic demonstration completed on the moon showing that all object fall at the same rate in the absence of air resistance.

Well, someone has to start this thread. We need to create a system of tags that the group can agree on. With the individual classification systems, a lot of us designed systems that were specific to what we teach. However, I don't think that is going to work for a group system. We probably have to stay more broad in our categories.

I like Christian's set-up of professional development, student helpers, teacher helpers, and lesson helpers. Perhaps the lesson helpers can be broken down into some essential elements (anticipatory set, instruction, independent/guided practice, assessment) What do you guys think? What would you include for essential elements?

This is as good of a place to start as any. This way we don't have to worry about of different opinions as to the essential elements. These are concrete categories. Besides, the system doesn't have to be perfect.

Key... MAIN CATEGORY: sub catergories

VIDEOS: instructional, anticipatory set, closure
PROBLEMS: downloadable, online
WEBSITES: articles, simulations/virtual lab, instructional, data
DESIGN: images, sounds, fonts, tools

Problems is something that would probably be specific to my physics classes. What I mean for that category is that I am looking for downloadable worksheets or just plain websites that have problems for students to solve.

A PDF would be good for me too.

I tried to avoid the overlap well trying to develop my system. I like how specific this system is. It would make it very easy to find things. I am not sure about the size of the system thought. By my count there are ultimately 33 categories at the bottom of the system.

I like the teacher, student, and lesson helper categories too. I think I would have pushed them up a level to be the main categories to reduce some of the size of the system a little, but that is just me. The system is really clear the way it is now.